signmessage

signmessage "address" "message" Sign a message with the private key of an address Requires wallet passphrase to be set with walletpassphrase call if wallet is encrypted. Arguments: 1. address (string, required) The bitcoin address to use for the private key. 2. message (string, required) The message to create a signature of. Result: "str" (string) The signature of the message encoded in base 64 Examples: Unlock the wallet for 30 seconds > bitcoin-cli walletpassphrase "mypassphrase" 30 Create the signature > bitcoin-cli signmessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "my message" Verify the signature > bitcoin-cli verifymessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "signature" "my message" As a JSON-RPC call > curl --user myusername --data-binary '{"jsonrpc": "2.0", "id": "curltest", "method": "signmessage", "params": ["1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX", "my message"]}' -H 'content-type: application/json' http://127.0.0.1:8332/

Signature

signmessage(address: string, message: string) → any

Code samples

curl --user "$RPC_USER:$RPC_PASS" \
  --data-binary '{"jsonrpc":"1.0","id":"docs","method":"signmessage","params":["\"<address>\"","\"<message>\""]}' \
  -H 'content-type: text/plain;' \
  http://127.0.0.1:8332/

bitcoin-cli walletpassphrase "mypassphrase" 30

bitcoin-cli signmessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "my message"

bitcoin-cli verifymessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "signature" "my message"

curl --user myusername --data-binary '{"jsonrpc": "2.0", "id": "curltest", "method": "signmessage", "params": ["1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX", "my message"]}' -H 'content-type: application/json' http://127.0.0.1:8332/

import requests
r = requests.post(
    "http://127.0.0.1:8332/",
    auth=("$RPC_USER", "$RPC_PASS"),
    json={
        "jsonrpc": "1.0",
        "id": "docs",
        "method": "signmessage",
        "params": ["\"<address>\"", "\"<message>\""],
    },
    timeout=30,
)
print(r.json())

const res = await fetch("http://127.0.0.1:8332/", {
  method: "POST",
  headers: {
    "content-type": "application/json",
    "authorization": "Basic " + btoa(`${process.env.RPC_USER}:${process.env.RPC_PASS}`),
  },
  body: JSON.stringify({
    jsonrpc: "1.0",
    id: "docs",
    method: "signmessage",
    params: ["\"<address>\"","\"<message>\""],
  }),
});
console.log(await res.json());

Parameters

Name	Type	Req.	Description
address	`string`	yes	The bitcoin address to use for the private key.
message	`string`	yes	The message to create a signature of.

Result

Type: any

"str" (string) The signature of the message encoded in base 64

Source: services/core-node/bcore/src/wallet/rpc/signmessage.cpp:23

C++ symbol: signmessage

Code samples

curl --user "$RPC_USER:$RPC_PASS" \
  --data-binary '{"jsonrpc":"1.0","id":"docs","method":"signmessage","params":["\"<address>\"","\"<message>\""]}' \
  -H 'content-type: text/plain;' \
  http://127.0.0.1:8332/

bitcoin-cli walletpassphrase "mypassphrase" 30

bitcoin-cli signmessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "my message"

bitcoin-cli verifymessage "1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX" "signature" "my message"

curl --user myusername --data-binary '{"jsonrpc": "2.0", "id": "curltest", "method": "signmessage", "params": ["1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX", "my message"]}' -H 'content-type: application/json' http://127.0.0.1:8332/

import requests
r = requests.post(
    "http://127.0.0.1:8332/",
    auth=("$RPC_USER", "$RPC_PASS"),
    json={
        "jsonrpc": "1.0",
        "id": "docs",
        "method": "signmessage",
        "params": ["\"<address>\"", "\"<message>\""],
    },
    timeout=30,
)
print(r.json())

const res = await fetch("http://127.0.0.1:8332/", {
  method: "POST",
  headers: {
    "content-type": "application/json",
    "authorization": "Basic " + btoa(`${process.env.RPC_USER}:${process.env.RPC_PASS}`),
  },
  body: JSON.stringify({
    jsonrpc: "1.0",
    id: "docs",
    method: "signmessage",
    params: ["\"<address>\"","\"<message>\""],
  }),
});
console.log(await res.json());